Microfiber Perfect Snug Fit: Measuring 45" × 19" × 4", Coldwind nap mat cover fits up to ECR4Kids Everyday Folding Rest Mat and KinderMat nap mat. Deep pockets make sure the nap mattress cover universal fit mattress up to 4 inch thick. Each nap mat sheet comes with an elastic band encased at the bottom for safety. Ultra Soft & Breathable: Our nap mat sheet is thoughtfully designed using high-quality microfiber, which is breathable, stretchy and silky soft, friendly to baby's sensitive skin, providing your little ones a safe and comfy sleeping environment. Eco-friendly and Machine Washable: The microfiber knit nap mat cover sheets are produced under stringent environmental standards, so you get peace of mind when your little one sleeps. Our nap mat sheet is machine washable and dryer friendly. Easy Care: The high quality microfiber will not pilling, gentle wash to a max heat setting of 40℃/100℉, tumble dry low heat. Do not iron. Do not dry clean. Do not bleach. Satisfaction Guarantee: We truly believe in our nap mat cover and work hard to provide top notch customer service. If there is any problem with our nap mat sheet, we can replace for you. Coldwind microfiber fitted nap/rest cover mat sheet adds comfort and warmth to daycare mats. Measuring 19" x 45" x 4", our nap mat sheet fits for ECR4Kids Everyday Folding Rest Mat. Fitted with 4 Elastic Corners and easily fits over the nap/rest mat to provide comfort during nap time. Machine washable and easy care.